Miners- ASICs do nothing but hash numbers. Running a full node is setting up a computer to have the bitcoin software running, recieving new transactions, and storing past transactions. The computational load of nod is very low. It is mostly about having a good connection and enough storage. Miners just need an RPC connection to a full node to be able to hash the next block. Bitaxe is very efficient. S-19s give off heat for other uses. Anyway, good luck.